JP6437214B2 - Body pressure distribution display system - Google Patents

Description

  The present invention relates to a body pressure distribution display system.

  As a body pressure distribution display system that displays the distribution of body pressure applied to the buttocks and back of a seated person sitting on a chair, a sensor sheet for pressure distribution measurement is provided on the surface of the chair seat and backrest, and the chair There is known a body pressure distribution display system that displays an image of the distribution of pressure applied to the buttocks and back of a seated person on the back with a difference in hue and color shade (see, for example, Patent Documents 1 to 3). . The body pressure distribution display system disclosed in these documents is a display in which body pressure input to the control unit via sensors disposed on the seat and backrests constituting the chair is linked to the control unit. It has a function to display on the screen.

Japanese Patent No. 3903206 Japanese Patent Publication No. 51-004778 JP 2010-091538 A

  By the way, it is known that the seating feeling of the seated person is improved by interposing a lumbar support that reinforces the support force of the backrest at a position corresponding to the lumbar portion in the backrest of the chair. This phenomenon is attributed to the fact that the lumbar portion of the seated person serves as a fulcrum when moving the back in the front-rear direction. The lumbar support prevents excessive loading of the upper body of the lumbar part by stabilizing the lumbar part's front and back position with the back extending in the vertical direction with a back-like shape. Making it possible.

  Therefore, it is desirable to provide a lumbar support also in the body pressure distribution display system and measure how the position of the lumbar support affects the body pressure distribution. However, the lumbar support is a member that moves independently with respect to the backrest of the chair, and is disposed on the opposite side of the backrest when viewed from the seated person. It is difficult to intuitively recognize the position and the effect on the body pressure distribution accompanying the position change.

  The present invention has been made in view of the above, and an object thereof is to display a body pressure distribution display system capable of intuitively recognizing the position of the lumbar support and the effect on the body pressure distribution accompanying the position change. Is to provide.

  In order to solve the above-described problems and achieve the object, the present invention detects the distribution of body pressure applied to the seated person's buttocks and back when the chair is seated on the chair and the backrest surface. Body pressure distribution detecting means, a lumbar support means arranged to be movable with respect to the backrest and changing the shape of the surface of the backrest by pressing the back surface of the backrest, and the side of the chair Detection means for detecting the position of the lumbar support means viewed from the side, a side image area displaying a side image including at least an indicator indicating the position of the lumbar support means viewed from the side of the chair, and the body pressure And a body pressure distribution display unit having a body pressure distribution display area for displaying a body pressure distribution image representing the distribution by visualization.

  In the body pressure distribution display system according to the present invention, in the above invention, the detection means is a camera for photographing the chair from a side, and the indicator is a sign provided on a lumbar support means. It is characterized by being taken by

  In the body pressure distribution display system according to the present invention as set forth in the invention described above, the side image is taken by storing the side surface of the chair, a seated person seated in the chair, and the sign on the same screen by the camera. It is characterized by that.

  In the body pressure distribution display system according to the present invention as set forth in the invention described above, the sign is disposed so as to be visible from the side of the chair through a gap provided on a side surface of the chair. .

  In the body pressure distribution display system according to the present invention, in the above invention, the indicator is configured using a light emitting element that emits light when a signal requesting to move at least the lumbar support means is input. It is characterized by.

  The body pressure distribution display system according to the present invention has an effect that the position of the lumbar support and the effect on the body pressure distribution accompanying the position change can be intuitively recognized.

FIG. 1 is a block diagram showing a schematic configuration of a body pressure distribution display system. FIG. 2 is a side view showing a chair used in a body pressure distribution display system. FIG. 3 is a front view showing a chair used in the body pressure distribution display system. FIG. 4 is a partially exploded view showing an outline of the internal mechanism of the chair. FIG. 5 is a perspective view of the backrest drive unit as viewed obliquely from the rear. FIG. 6 is a perspective view of the backrest drive unit as viewed obliquely from the front. FIG. 7 is a perspective view of the backrest drive unit and the backup plate viewed from an oblique front. FIG. 8 is a side view of the backrest drive unit. FIG. 9 is a side view of the backrest drive unit and the slat. FIG. 10 is a side view of the backrest drive unit and the slats viewed from an oblique rear side. FIG. 11 is a rear view in which the backrest drive unit and the slat are combined. FIG. 12 is a bottom view of the backrest drive unit and the slat. FIG. 13 is a perspective view of the backrest outer casing. FIG. 14 is a perspective view of a state in which the backrest drive unit is incorporated into the backrest outer casing. FIG. 15 is a side view of the lumbar support sign incorporated inside the backrest outer casing as viewed from the outside of the backrest outer casing. FIG. 16 is a side view of the chair showing a manner of vertical movement of the backrest surface. FIG. 17 is a side view of the chair showing how the surface shape of the backrest changes. FIG. 18 is a side view of the chair showing a manner of changing the inclination angle of the backrest. FIG. 19 is a side view of the chair showing a manner of front and back movement of the seat surface. FIG. 20 is a side view of the chair showing an aspect of changing the inclination angle of the seating surface. FIG. 21 is a conceptual diagram illustrating a usage mode of the body pressure distribution display system. FIG. 22 is a diagram illustrating a screen display example of the body pressure distribution display system.

  A body pressure distribution display system according to an embodiment of the present invention will be described below in detail with reference to the drawings. The present invention is not limited to the embodiments described below. Moreover, in each drawing, the same code | symbol is attached | subjected suitably to the same or corresponding element. Furthermore, it should be noted that the drawings are schematic, and dimensional relationships between elements may differ from actual ones. Even between the drawings, there are cases in which portions having different dimensional relationships and ratios are included.

(Body pressure distribution display system)
FIG. 1 is a block diagram showing a schematic configuration of a body pressure distribution display system. As shown in FIG. 1, the body pressure distribution display system 1000 includes a chair 100, a PLC 200, a personal computer 300, detection means 400 a, and a monitor screen 500.

  The chair 100 includes a servo motor 101, a sensor seat 102, and a lumbar support 103, and is a device on which a user (that is, a seated person) of a body pressure distribution display system sits. The servo motor 101 is a power source for changing various settings such as the position of the lumbar support 103 of the chair 100, and the sensor seat 102 distributes body pressure applied to the seated person's buttocks and back when seated on the chair 100. It becomes a body pressure distribution detecting means for detecting. The sensor sheet 102 transmits the detected body pressure distribution to the personal computer 300.

  The PLC (programmable logic controller) 200 is a control device for controlling the servo motor 101 of the chair 100 in sequence, and includes, for example, a touch panel 201 as input means.

  The position of the lumbar support 103 is detected by the detecting means 400 a, and information on the indicator 104 indicating the position of the lumbar support 103 viewed from the side of the chair 100 is transmitted to the personal computer 300. As will be described in detail later, it is conceivable that the indicator 104 is obtained by photographing a marker provided on the lumbar support 103 with a camera as the detection means 400a. However, the configuration example of the indicator 104 is limited to this example. Is not to be done.

  The personal computer 300 processes inputs from the PLC 200, the sensor sheet 102, and the detection means 400 a and outputs a screen to the monitor screen 500. The personal computer 300 is also used for controlling the PLC 200.

Here, for ease of explanation, each configuration of the body pressure distribution display system 1000 has been described abstractly. However, each configuration of the body pressure distribution display system 1000 will be described more specifically below. .
(Composition of chair)
FIG. 2 is a side view showing a chair used in the body pressure distribution display system, and FIG. 3 is a front view thereof. Here, the overall configuration and function of the chair 100 will be described with reference to FIGS. 2 and 3, and the detailed configuration and function of each part of the chair 100 will be separately described later. As shown in FIGS. 2 and 3, the chair 100 includes a pedestal 10, a base body 20, a seat 30, a backrest 40, and a headrest 50 as main components.

  The pedestal 10 is for fixing the chair 100 to the floor surface, and has a structure in which the chair 100 is supported from below by adjusters 12 provided at the four corners of the rectangular pedestal base plate 11. The adjuster 12 is for adjusting the gap between the pedestal plate 11 and the floor surface, and the chair 100 is installed using the adjuster 12 so that the pedestal plate 11 is horizontal. The adjuster 12 provided at each of the four corners incorporates a load cell so that the total weight of the seated person sitting on the chair 100 can be detected. In addition, casters 13 are provided at the four corners of the rectangular plate-like base plate 11 to facilitate the movement of the chair 100. Further, a step platform 14 is provided on the base plate 11 so that a seated person can easily sit on the seat 30 of the chair 100.

  The base body 20 is provided on the base plate 11 and supports the seat 30 and the backrest 40. The base body 20 includes a vertical movement mechanism 21, and the distance between the seat 30 and the backrest 40 fixed to the base body 20 can be changed by driving the vertical movement mechanism 21. That is, for a seated person who sits on the seat 30 with his / her foot on the step 14 that forms a part of the pedestal 10, the chair 100 is configured so that the height of the chair can be changed.

  The seat 30 includes a seat surface 31 on which a seated person can sit, and the seat surface 31 is configured to be movable back and forth. The front and rear in this case are front and rear for the seated state of the seated person, and for the chair 100, the front and rear when the direction of the step 14 is the front direction and the direction of the backrest 40 is the rear direction. Furthermore, the seating surface 31 is configured such that the inclination angle can be changed with respect to the axial rotation around the point P1 in the drawing. That is, for a seated person sitting on the seat 30 with his / her foot on the step platform 14, the chair 100 has a configuration in which the so-called chair depth can be changed.

  The seat surface 31 is provided with a load sensor sheet as a body pressure distribution detecting means. The load sensor sheet is configured such that a large number of load sensor elements are arranged on a two-dimensional plane and a load applied to each element can be detected. By providing the load sensor seat on the seat surface 31, the chair 100 can detect the distribution of pressure received by the seat surface 31 when the seated person sits. In addition, since the distribution of the pressure which the seat surface 31 receives can be equated with the distribution of the pressure which a seated person receives from the seating surface 31, the chair 100 is a distribution of the body pressure applied to the seated person's buttocks. Will be detected.

  The backrest 40 is provided on the back upper part of the base body 20 via the backrest support 41 and is a structure for a seated person to lean back. That is, the seated person sitting on the seat 30 brings the back into contact with the backrest surface 42 of the backrest 40 to maintain the stability of the upper body. The backrest 40 includes a lumbar support member 60 at a location corresponding to the lumbar portion of the seated person. The lumbar support member 60 stabilizes the front and back positions of the seated person's lumbar vertebra part, and prevents an excessive load from the back on the lumbar part.

  The backrest surface 42 is configured to be movable up and down with respect to the backrest support body 41, that is, the base body 20 by the action of the backrest drive unit 43. The backrest support body 41 is provided on the base body 20 and is configured to be movable up and down with respect to the base 10. Therefore, the backrest surface 42 is configured to be vertically movable in two different modes with respect to the base 10. On the other hand, the seat surface 31 is configured to be movable up and down with respect to the base 10, but does not move up and down with respect to the base body 20. That is, the vertical movement by the vertical movement mechanism 21 of the base body 20 is an overall vertical movement including the seat surface 31 and the backrest surface 42, while the vertical movement by the backrest drive unit 43 is the back motion with respect to the seat surface 31. This is the relative vertical movement of the drooping surface 42.

  Further, the backrest 40 is configured such that the inclination angle can be changed with respect to the axial rotation in the left-right direction around the point P2 in the drawing. That is, for the seated person sitting on the seating surface 31, the inclination angle of the backrest surface 42 can be changed.

  The lumbar support member 60 provided on the backrest 40 is configured to be able to move up and down and back and forth with respect to the backrest surface 42 while pressing the back surface of the backrest surface 42 by the action of the backrest drive unit 43. ing. Therefore, the lumbar support member 60 has an action of changing the shape of the surface of the backrest surface 42.

  The backrest surface 42 is provided with a load sensor sheet as a body pressure distribution detecting means. Since the load sensor seat is provided on the backrest surface 42, the chair 100 can detect the distribution of pressure received by the backrest surface 42 when the seated person is seated. Since the distribution of pressure received by the backrest surface 42 can be equated with the distribution of pressure received by the seated person from the backrest surface 42, the chair 100 is subjected to body pressure applied to the back of the seated seated person. Is detected.

  The headrest 50 is provided above the backrest 40 and is configured to move up and down together with the vertical movement of the backrest surface 42. The headrest 50 is provided on the backrest 40 via a plurality of hinges 51, and is configured such that the relative position and angle with respect to the backrest surface 42 can be changed.

  As described above, the chair 100 is configured to be able to change the position and angle of the seat surface 31 and the position, angle, and shape of the backrest surface 42, and measure the body pressure distribution of the seated person in that state. Can do. Therefore, the chair 100 is configured to be able to detect the influence of the position and angle of the seat surface 31 and the position, angle and shape of the backrest surface 42 on the body pressure distribution of the seated person.

  Next, the detailed structure and function of each part of the chair 100 will be described. FIG. 4 is a partially exploded view showing an outline of the internal mechanism of the chair. Here, the operation of the internal mechanism for each component of the chair 100 will be described with reference to FIG. In FIG. 4, only the internal configuration of the base body 20, the seat 30, and the backrest 40 in the chair 100 is shown for ease of explanation.

  As shown in FIG. 4, each component of the backrest drive unit 43 is incorporated in a holding frame 44 fixed to the backrest support body 41. The backrest drive unit 43 moves the backrest outer casing 46 up and down via a backrest holding member 45. Since the backrest surface 42 is held by the backrest outer casing 46, as a result, the backrest drive unit 43 moves up and down the backrest surface 42. The backrest drive unit 43 moves the lumbar support member 60 up and down and back and forth via the lumbar support holding member 61. That is, the backrest drive unit 43 moves the backrest surface 42 up and down and changes its shape.

  As shown in FIG. 4, a seat surface back-and-forth movement mechanism 32 is provided between the seat surface 31 of the seat 30 and the base body 20. The seat surface back-and-forth movement mechanism 32 is interposed between the seat surface 31 and the base body 20 and changes the position of the seat surface 31 relative to the base body 20 in the front-rear direction. Note that a mechanism such as an actuator is provided inside the seat surface back-and-forth movement mechanism 32, and the position of the seat surface 31 in the front-rear direction relative to the base body 20 can be controlled by a control signal from the outside. It is configured as follows.

  Further, a seat surface tilting shaft 33 is interposed between the seat surface back-and-forth motion mechanism 32 and the base body 20. The seating surface tilting axis 33 is used to rotate the seat 30 as a whole including the seating surface 31 and the seating surface longitudinal movement mechanism 32 around the seating surface tilting shaft 33 in order to change the tilting angle of the seating surface 31 with respect to the base body 20. belongs to. Note that a mechanism such as an actuator is provided inside the base body 20 so that the inclination angle of the seat surface 31 with respect to the base body 20 can be controlled by a control signal from the outside.

  Similarly, a backrest inclined shaft 34 is interposed between the backrest support body 41 and the base body 20. In order to change the inclination angle of the backrest surface 42 with respect to the base body 20, the backrest inclination shaft 34 rotates around the backrest inclination shaft 34, including the backrest surface 42 and the backrest drive unit 43. It is for making it happen. In addition, a mechanism such as a cylinder is provided inside the base body 20 so that the inclination angle of the backrest surface 42 with respect to the base body 20 can be controlled by a control signal from the outside.

  Next, details of the backrest drive unit 43 will be described with reference to FIGS. 5 to 12. FIG. 5 is a perspective view of the backrest drive unit as viewed from obliquely rear, FIG. 6 is a perspective view of the backrest drive unit 43 as viewed from diagonally forward, and FIG. 7 is a view of the backrest drive unit and the backup plate. FIG. 8 is a side view of the backrest drive unit, FIG. 9 is a side view of the backrest drive unit and the slats, and FIG. FIG. 11 is a side view of the backrest driving unit and the slat viewed from an oblique rear side, FIG. 11 is a rear view of the backrest driving unit and the slat, and FIG. 12 is a back view driving unit and the slat. FIG. Since the detailed configuration of the backrest drive unit and the relationship between these components are described throughout the drawings of FIGS. 5 to 12, the following description is made with reference to the drawings.

  As commonly shown in FIGS. 5 to 12, each component of the backrest drive unit 43 is held by a holding frame 44. Since the holding frame 44 is held on the base body 20 via the backrest support body 41, each configuration of the backrest drive unit 43 is changed relative to the base body 20 by changing the relative position with respect to the holding frame 44. Change the position.

  As shown in FIGS. 5, 10, 11, and the like, the backrest drive unit 43 has a backrest vertical movement servomotor 71, a lumbar support vertical movement servomotor 72, and a lumbar support longitudinal movement servomotor as drive sources. 73 is provided.

  The backrest vertical movement servomotor 71 is fixed to the holding frame 44 and rotates the screw shaft 75 via the speed reducer 74. The screw shaft 75 is fixed to the holding frame 44 via a bearing, and a traveling nut 76 screwed to the screw shaft 75 is fixed to a backrest raising / lowering plate 77. Therefore, the rotation of the backrest vertical movement servomotor 71 is converted into the vertical movement of the backrest lift plate 77. 6 to 9 and the like, the backrest lift plate 77 is configured to move up and down along a lift guide 78 provided on the holding frame 44. Further, the backrest holding member 45 for connecting the backrest outer casing 46 and the backrest drive unit 43 described above is fixed to the backrest lift plate 77.

  As shown in FIGS. 10 and 11, the lumbar support vertical movement servomotor 72 is fixed to the backrest lifting plate 77 and rotates the screw shaft 80 via the belt 79. The screw shaft 80 is fixed to a backrest lifting plate 77 via a bearing, and a traveling nut 81 screwed to the screw shaft 80 is fixed to a lumbar support lifting plate 82. Therefore, the rotation of the lumbar support vertical movement servomotor 72 is converted into the vertical movement of the lumbar support lifting plate 82. 6 to 9 and the like, the lumbar support lifting plate 82 is configured to move up and down along a lifting guide 83 provided on the backrest lifting plate 77.

  As shown in FIGS. 10 and 11, the lumbar support back-and-forth movement servomotor 73 is fixed to the backrest lift plate 77 and rotates the screw shaft 85 via the belt 84. The screw shaft 85 is fixed to the lumbar support member 60 via a bearing, and a traveling nut 86 screwed to the screw shaft 85 is fixed to the lumbar support lifting plate 82 via the bearing. Therefore, the rotation of the lumbar support longitudinal movement servomotor 73 is converted into the longitudinal movement of the lumbar support member 60. As shown in FIG. 6, the lumbar support member 60 is configured such that the lumbar support holding member 61 fixed to the lumbar support member 60 moves back and forth while being screwed into a hole provided in the lumbar support lifting plate 82. Has been.

  As shown in FIGS. 7 to 9 and the like, a backup plate 62 is attached to the lumbar support member 60. When the lumbar support member 60 presses the back surface of the backrest surface 42 and changes the shape of the surface of the backrest surface 42, the backup plate 62 forms a gentle slope on the surface of the backrest surface 42. As is the plate to support. The backup plate 62 has a lower end fixed to the lumbar support member 60 and an upper end configured to be movable along the backup guide 63. Thereby, even when the lumbar support member 60 moves up and down, the shape of the surface of the backrest surface 42 can maintain a smooth inclination.

  As shown in FIG. 6 and FIG. 7 and the like, a roll 64 is attached to the lumbar support member 60. The roll 64 is provided so that the lumbar support member 60 pressing the back surface of the backrest surface 42 can easily move up and down.

  Further, as shown in FIGS. 5 to 9 and the like, the lumbar support member 60 is provided with a lumbar support mark 65. In order to improve the visibility, the lumbar support mark 65 is preferably configured to emit light using, for example, an LED element. Note that, as will be described in detail later, the lumbar support sign 65 is configured to be visible when observed from the side surface of the chair 100. The LED element is configured to emit light when a signal requesting to move at least the lumbar support member 60 is input. For example, the LED element may be configured to always light after power is turned on, or may be configured to emit light after a signal requesting to move the lumbar support member 60 is input.

  As shown in FIGS. 9 to 12 and the like, the lumbar support member 60 is configured to press the slat 66. The slat 66 is formed by connecting elongated rectangular plate members, and is configured to allow deformation in the vertical direction but not in the horizontal direction. That is, the lumbar support member 60 presses the back surface of the backrest surface 42 through the slats 66. The role of the slat 66 is to correct so that when the position of the lumbar support member 60 is changed, the surface shape of the backrest surface 42 allows deformation in the vertical direction but does not allow deformation in the horizontal direction.

  As shown in FIGS. 9 and 12, the slat 66 is tensioned by a spring 67. As shown in FIG. 9, one end of the spring 67 is fixed to the backrest outer casing 46 (see FIG. 13), and the other end of the spring 67 is connected to the connection member 68. The connection member 68 has a fulcrum fixed to the backrest outer casing 46, and transmits the tension of the spring 67 to the slat 66. As shown in FIG. 9, due to the tension applied by the spring 67, the slat 66 is always pressed against the lumbar support member 60, and the slat 66 itself is also pressed against the lumbar support member 60. .

  Next, an embodiment in which the backrest drive unit 43 is incorporated in the backrest outer casing 46 will be described with reference to FIGS. 13 to 15. FIG. 13 is a perspective view of the backrest outer casing, FIG. 14 is a perspective view of a state in which the backrest driving unit is incorporated in the backrest outer casing, and FIG. 15 is incorporated inside the backrest outer casing. It is the side view which looked at the lumbar support sign from the back of the outer casing.

  As shown in FIG. 13, a hole h is formed in the back surface of the backrest outer casing 46. This hole h is for inserting the lumbar support member 60 into the back casing 46. A backrest holding member 45 for connecting the backrest outer casing 46 and the backrest lift plate 77 is attached to the left and right of the hole h.

  The slats 66 are attached to the front side of the backrest outer casing 46. The upper end of the slat 66 is fixed to the back casing 46, and the lower end is connected to the connection member 68. The connection member 68 has a fulcrum fixed to the backrest outer casing 46, and the tension of the spring 67 is transmitted to the slat 66.

  As shown in FIG. 14, the backrest casing 46 and the backrest lift plate 77 are connected via a backrest holding member 45. As described above, the backrest lift plate 77 is driven by the backrest drive unit 43 in the vertical direction with respect to the holding frame 44. On the other hand, in the lumbar support member 60 inserted into the backrest outer casing 46, the backrest drive unit 43 is driven in the vertical direction with respect to the backrest lift plate 77. As a result, when the backrest vertical movement servomotor 71 is driven, the backrest casing 46 and the slat 66 move in the vertical direction without changing the shape, and the lumbar support vertical movement servomotor 72 and the lumbar support longitudinal movement servomotor. When 73 is driven, the backrest outer casing 46 does not move, and the surface shape of the slat 66 changes.

  As shown in FIG. 15, the lumbar support member 60 inserted into the backrest outer casing 46 is visible from the outside of the backrest outer casing 46 through the gap between the slat 66 and the backrest outer casing 46. It is arranged in the position. This gap is inevitably generated because the lumbar support member 60 presses the back surface of the slat 66. Therefore, even when the position of the lumbar support member 60 is changed inside the backrest outer casing 46, a gap is generated between the slat 66 and the backrest outer casing 46 around the lumbar support member 60. It will be. The gap between the slat 66 and the back casing 46 is provided on the side surface of the chair 100, and the lumbar support member 60 is provided with a lumbar support mark 65. It arrange | positions so that it can visually recognize from the side of the said chair through the clearance gap provided in the side surface of the chair 100. FIG.

  Next, the driving mode of the chair 100 described above will be described with reference to FIGS.

  FIG. 16 is a side view of the chair showing a manner of vertical movement of the backrest surface. As shown in FIG. 16, in the chair 100, the backrest outer casing 46 moves up and down by the function of the backrest drive unit 43. Along with this movement, the backrest surface 42 attached to the backrest outer casing 46 moves in the vertical direction, and is changed to the backrest surface 42a and the backrest surface 42b.

  FIG. 17 is a side view of the chair showing how the surface shape of the backrest changes. As shown in FIG. 17, in the chair 100, the lumbar support member 60 moves in the vertical direction and the front-rear direction within the backrest outer casing 46 by the function of the backrest drive unit 43. For example, in the example shown in FIG. 17, the position is changed to the lumbar support member 60a or the lumbar support member 60b. With this movement, the shape of the backrest surface 42 whose back surface is pressed by the lumbar support member 60 is changed to the backrest surface 42c and the backrest surface 42d.

  FIG. 18 is a side view of the chair showing a manner of changing the inclination angle of the backrest. As shown in FIG. 18, in the chair 100, the backrest support body 41 rotates with respect to the axial rotation in the left-right direction around the backrest inclination axis 34, and the backrest support body 41 moves to the position of the backrest support body 41 a. Be changed. With this rotation, the backrest 40 supported by the backrest support body 41 is changed to the position of the backrest 40a, and the inclination angle of the backrest 40 is changed.

  FIG. 19 is a side view of the chair showing a manner of front and back movement of the seat surface. As shown in FIG. 19, in the chair 100, the seat surface 31 moves in the front-rear direction by the function of the seat surface back-and-forth movement mechanism 32. For example, in the example shown in FIG. 19, the seat surface 31 moves to the position of the seat surface 31a.

  FIG. 20 is a side view of the chair showing an aspect of changing the inclination angle of the seating surface. As shown in FIG. 20, in the chair 100, the seat surface back-and-forth motion mechanism 32 rotates with respect to the axial rotation in the left-right direction around the seat surface tilting axis 33, and the seat surface back-and-forth motion mechanism 32 rotates. It is changed to the position. With this rotation, the seat surface 31 attached to the seat surface back-and-forth movement mechanism 32 is changed to the position of the seat surface 31b, and the inclination angle of the seat surface 31 is changed.

(Usage of display system of body pressure distribution)
Finally, a usage mode of the body pressure distribution display system will be described with reference to FIGS. 21 and 22. FIG. 21 is a conceptual diagram illustrating a usage mode of the body pressure distribution display system, and FIG. 22 is a diagram illustrating a screen display example of the body pressure distribution display system.

  As shown in FIG. 21, the body pressure distribution display system 1000 is used in a state where a seated person M is seated on a chair 100. As described above with reference to FIG. 1, the body pressure distribution display system 1000 includes the chair 100, the PLC 200, the personal computer 300, the camera 400, and the monitor screen 500.

  As shown in FIG. 21, the camera 400 is for photographing the chair 100 and a seated person M seated on the chair 100 from the side. The chair 100 is provided with a lumbar support sign 65 indicating the position of the lumbar support, and is disposed so as to be visible from the side of the chair 100 through a gap provided on the side surface of the chair 100. The side surface of the chair 100, the seated person M seated on the chair 100, and the lumbar support sign 65 can be captured by the camera 400 on the same screen.

  The personal computer 300 is a general-purpose computer that can process input from the PLC 200, the body pressure distribution sensor sheet 102, and the camera 400 and output the screen to the monitor screen 500. The PLC 200 is connected to a touch panel 201 for an operator to operate the body pressure distribution display system 1000. The seated person M may also be configured to connect a separate remote controller or the like to the PLC 200 in order to operate the body pressure distribution display system 1000.

  As shown in FIG. 21, a side image 501, a backrest surface pressure distribution image 502, a seat surface pressure distribution image 503, a stereoscopic display body pressure distribution image 504, and a setting information image 505 are displayed on the monitor screen 500. ing. The side image 501 is a side image of the chair 100 photographed by the camera 400 and the seated person M seated on the chair 100. As described above, the camera 400 can shoot the side surface of the chair 100, the seated person M sitting on the chair 100, and the lumbar support sign 65 on the same screen by the camera 400. The image includes a lumbar support mark 65 as an indicator showing the position of the lumbar support as viewed from the side of 100.

  The backrest body pressure distribution image 502, the seat surface body pressure distribution image 503, and the three-dimensional display body pressure distribution image 504 are obtained by visualizing and displaying the body pressure distribution detected by the body pressure distribution sensor sheet 102. The setting information image 505 schematically displays numerical values of parameters for each setting of the chair 100. These side image 501, backrest body pressure distribution image 502, seat surface body pressure distribution image 503, stereoscopic display body pressure distribution image 504, and setting information image 505 are input from body pressure distribution sensor sheet 102, PLC 200, and camera 400. The personal computer 300 synthesizes the image based on the information and displays it on the monitor screen 500.

  As described above, the body pressure distribution display system 1000 includes the side image area for displaying the side image 501 including the lumbar support mark 65 indicating the position of the lumbar support 103 viewed from the side of the chair 100, and the body pressure distribution. A monitor having a backrest body pressure distribution image 502, a seating surface body pressure distribution image 503, and a body pressure distribution display area for displaying a stereoscopic display body pressure distribution image 504, which are visualized and displayed on the body pressure distribution detected by the sensor sheet 102. Since the screen 500 is provided, the seated person M can recognize the position where the lumbar support 103 acts and the influence of the position of the lumbar support 103 on the body pressure distribution. Therefore, according to the body pressure distribution display system 1000, the seated person M can recognize the effect of the lumbar support 103 by associating both the position of the lumbar support 103 and the body pressure distribution.

  In the body pressure distribution display system 1000, the indicator 104 indicating the position of the lumbar support 103 viewed from the side of the chair 100 is obtained by photographing the lumbar support sign 65 provided on the lumbar support means 60 with the camera 400. Since it is not necessary to provide the chair 100 with a sensor for recognizing the position of the lumbar support member 60, the cost of the body pressure distribution display system 1000 can be reduced.

  In addition, a side-captured image 501 in the body pressure distribution display system 1000 is obtained by capturing the side surface of the chair 100, the seated person M sitting on the chair 100, and the lumbar support sign 65 on the same screen with the camera 400. Therefore, the seated person M links not only two links between the position of the lumbar support 103 and the body pressure distribution, but also links the three positions of the lumbar support 103 with the seating posture of the seated person M and the body pressure distribution. The effect of the lumbar support 103 can be recognized. Specifically, according to the body pressure distribution display system 1000, when the lumbar support 103 is in an appropriate position, the back of the seated person M extends in a vertical direction with a "<" shape in a side view. It becomes a posture, and the body pressure distribution received from the seat surface 31 and the backrest surface 42 of the chair 100 is also appropriately dispersed, and it can be clearly recognized that the seating feeling of the seated person M is improved. Therefore, the body pressure distribution display system 1000 has a configuration suitable for a sensation-type device that is displayed in a museum, for example.

  In the body pressure distribution display system 1000 described above, the lumbar support sign 65 provided on the lumbar support means 60 is photographed as the detection means 400a for detecting the position of the lumbar support 103 viewed from the side of the chair 100. Although it is the camera 400, the example of the detection means 400a is not limited to this. For example, the detection unit 400a may be a counter that counts signals transmitted by the PLC 200 to drive the servo motor 101, or may be a sensor that measures the amount of displacement that the lumbar support 103 actually moves. it can. In this case, the indicator 104 displayed on the side image 501 is displayed on the monitor screen by combining the position of the lumbar support unit 60 measured by the counter or sensor with the side image captured by the separate imaging unit by the personal computer 300. It becomes the structure to display.

1000 Body pressure distribution display system 100 Chair 101 Servo motor 102 Sensor seat 103 Lumber support 104 Indicator 200 PLC
201 touch panel 300 personal computer 400 camera 400a detection means 500 monitor screen 11 base plate 12 adjuster 13 caster 14 step base 20 base body 21 vertical movement mechanism 30 seat 31 seat surface 32 seat surface longitudinal movement mechanism 33 seat surface tilt shaft 34 back tilt shaft 41 back Back support 42 Back support surface 43 Back drive unit 44 Holding frame 45 Back support member 46 Back support housing 50 Headrest 51 Hinge 60 Lumber support member 61 Lumber support holding member 62 Backup plate 63 Backup guide 64 Roll 65 Lumber support sign 66 Slat 67 Spring 68 Connection member 71 Backrest vertical movement servo motor 72 Lumber support vertical movement servo motor 73 Lumber support longitudinal movement servo motor 74 Reducer 75 Screw shaft 76 Travelin Nut 77 backrest elevating plate 78 lifting guide 79 the belt 80 screw shaft 81 Traveling nut 82 lumbar support elevating plate 83 lifting guide 84 the belt 85 screw shaft 86 Traveling nut

Claims (4)

Body pressure distribution detecting means provided on the surface of the chair seat and the backrest, for detecting the body pressure distribution applied to the buttocks and back of the seated person when sitting on the chair;
Lumber support means that is movably disposed with respect to the backrest and that changes the shape of the surface of the backrest by pressing the back surface of the backrest , and is visible from the side of the chair. Lumber support means provided with a sign that moves together with the lumbar support means ;
A camera for photographing the chair and the sign from the side;
A side surface on which a seated person seated on the chair is arranged so as to be visible and includes a side image captured by the camera, including at least the sign indicating the position of the lumbar support means viewed from the side of the chair. and an image region, the body pressure distribution possess a body pressure distribution display area for displaying the body pressure distribution image representing visualized, and body pressure distribution display means for displaying said body pressure distribution image and the side image simultaneously ,
A system for displaying a body pressure distribution. 2. The body pressure distribution according to claim 1 , wherein the side image is a side surface of the chair, a seated person sitting on the chair, and the sign taken by the camera on the same screen. Display system. The body pressure distribution display system according to claim 2 , wherein the sign is disposed so as to be visible from a side of the chair through a gap provided on a side surface of the chair. The body according to claim 2 or 3 , wherein the sign is configured by using a light emitting element that emits light when at least a signal requesting to move the lumbar support means is input. Pressure distribution display system.

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